Question

---How long did it _____ you to work out the difficult maths problems?
---I ______ about half an hour on it .

A．take ; took

B．spend ; took

C．spend ; cost

D．take ; spent

Answer 1

D

试题分析：句意：——你需要花费多长时间解决那些数学难题？——我花了大约半个小时。It took sb. to do sth；做某事花费某人多长时间。sb. spent sometime on sth./in doing sth. 某事/做某事花费某人多长时间。；sth. cost sb. some money. 某物花了某人多少钱。故选D。